no one has answered how to start the 'futa route' versions of the characters also there is a whole 'defeat' event in the gallery im guessing both might be related to being defeated by something ,maybe first boss in the futa case im going to test in abit will provide feed back. i have also found a possible glitch with the aquarium location ,so far only tested it with this location, but seemingly after you do the first 'date' or in this case 'hangout' event ,before you decide on the girl your dating, there before leaving you can enter the aquarium show room and im guessing the 'date with momo' events will progress im unsure if this will accure no matter the area as long as that area is the last area you choose kind of like a fail safe incase you have no way to progress to night and you didnt further the story or if it is a glitch for just the aquarium.
nope first boss fight loops if you get defeated. meaning you cant be 'defeated' by it.